I had success copying the driver from ESPHome (https://github.com/esphome/esphome/blob/dev/esphome/components/ethernet/esp_eth_phy_jl1101.c) into esp-idf/components/esp_eth/src, adding the source to esp-idf/components/esp_eth/CMakeLists.txt and also adding the prototype of esp_eth_phy_new_jl1101() t...